Cummins-developed diesel being developed for Nissan – Click above for image gallery

Is Nissan making play for diesel? According to our friends at, it sure seems that way... at least for pickup truck duty. Thanks to some cash from the U.S. Department of Engery, Cummins is developing a four-cylinder oil-burner, and it's currently nestled under the hood of a Nissan Titan. Cummins is looking to bump fuel efficiency by 40 percent compared to the current V8 mills being employed.

The current fuel economy target? A combined rating of 28 miles per gallon, which would mean the diesel-equipped Titan would be running at over 30 miles per gallon on the highway. Cummins is said to be targeting 220 horsepower and 380 pound-feet of torque, and currently, the prototype engine is able to produce 350 pound-feet of torque at 1,800 rpm.

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